An adverb phrase is a group of words that functions as an adverb in a sentence. It typically includes an adverb and any modifying words or phrases.

Here are some examples of adverb phrases:

• Quickly on the bike (adverb: “quickly”; modifier: “on the bike”)
• Carefully with the glass (adverb: “carefully”; modifier: “with the glass”)
• Loudly at the concert (adverb: “loudly”; modifier: “at the concert”)
• Happily in the sun (adverb: “happily”; modifier: “in the sun”)

In each of these examples, the adverb phrase is modifying a verb, adjective, or another adverb in the sentence. It provides additional information about the verb, adjective, or adverb and describes how, when, where, or to what extent the action is performed. Adverb phrases can also be used to answer questions about time, place, manner, or degree.